My ground is slippery.

Help Requests
1

On level 4, but only if you come from level 3, my ground is extremely slippery. I let go of all controls and the character slides for quite a while. Please help.
https://flowlab.io/game/play/1387455

EDIT: fixed! just had to replace all of my ground tiles.

2

I see no issue here, and I did exactly what you said.